From: Nathan Lynch <nathanl@linux.ibm.com>
To: Scott Cheloha <cheloha@linux.ibm.com>, linux-watchdog@vger.kernel.org
Cc: linux@roeck-us.net, tzungbi@kernel.org, brking@linux.ibm.com,
aik@ozlabs.ru, npiggin@gmail.com, vaishnavi@linux.ibm.com,
wvoigt@us.ibm.com, linuxppc-dev@lists.ozlabs.org,
Scott Cheloha <cheloha@linux.ibm.com>
Subject: Re: [PATCH v2 4/4] watchdog/pseries-wdt: initial support for H_WATCHDOG-based watchdog timers
Date: Tue, 21 Jun 2022 10:45:06 -0500 [thread overview]
Message-ID: <871qvinhq5.fsf@linux.ibm.com> (raw)
In-Reply-To: <20220602175353.68942-5-cheloha@linux.ibm.com>
Scott Cheloha <cheloha@linux.ibm.com> writes:
> PAPR v2.12 defines a new hypercall, H_WATCHDOG. The hypercall permits
> guest control of one or more virtual watchdog timers. The timers have
> millisecond granularity. The guest is terminated when a timer
> expires.
>
> This patch adds a watchdog driver for these timers, "pseries-wdt".
>
> pseries_wdt_probe() currently assumes the existence of only one
> platform device and always assigns it watchdogNumber 1. If we ever
> expose more than one timer to userspace we will need to devise a way
> to assign a distinct watchdogNumber to each platform device at device
> registration time.
>
> Signed-off-by: Scott Cheloha <cheloha@linux.ibm.com>
Reviewed-by: Nathan Lynch <nathanl@linux.ibm.com>
WARNING: multiple messages have this Message-ID (diff)
From: Nathan Lynch <nathanl@linux.ibm.com>
To: Scott Cheloha <cheloha@linux.ibm.com>, linux-watchdog@vger.kernel.org
Cc: wvoigt@us.ibm.com, aik@ozlabs.ru,
Scott Cheloha <cheloha@linux.ibm.com>,
vaishnavi@linux.ibm.com, npiggin@gmail.com, tzungbi@kernel.org,
brking@linux.ibm.com, linuxppc-dev@lists.ozlabs.org,
linux@roeck-us.net
Subject: Re: [PATCH v2 4/4] watchdog/pseries-wdt: initial support for H_WATCHDOG-based watchdog timers
Date: Tue, 21 Jun 2022 10:45:06 -0500 [thread overview]
Message-ID: <871qvinhq5.fsf@linux.ibm.com> (raw)
In-Reply-To: <20220602175353.68942-5-cheloha@linux.ibm.com>
Scott Cheloha <cheloha@linux.ibm.com> writes:
> PAPR v2.12 defines a new hypercall, H_WATCHDOG. The hypercall permits
> guest control of one or more virtual watchdog timers. The timers have
> millisecond granularity. The guest is terminated when a timer
> expires.
>
> This patch adds a watchdog driver for these timers, "pseries-wdt".
>
> pseries_wdt_probe() currently assumes the existence of only one
> platform device and always assigns it watchdogNumber 1. If we ever
> expose more than one timer to userspace we will need to devise a way
> to assign a distinct watchdogNumber to each platform device at device
> registration time.
>
> Signed-off-by: Scott Cheloha <cheloha@linux.ibm.com>
Reviewed-by: Nathan Lynch <nathanl@linux.ibm.com>
next prev parent reply other threads:[~2022-06-21 15:45 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-02 17:53 [PATCH v2 0/4] pseries-wdt: initial support for H_WATCHDOG-based watchdog timers Scott Cheloha
2022-06-02 17:53 ` Scott Cheloha
2022-06-02 17:53 ` [PATCH v2 1/4] powerpc/pseries: hvcall.h: add H_WATCHDOG opcode, H_NOOP return code Scott Cheloha
2022-06-02 17:53 ` Scott Cheloha
2022-06-21 14:44 ` Nathan Lynch
2022-06-21 14:44 ` Nathan Lynch
2022-06-21 17:31 ` Segher Boessenkool
2022-06-21 17:31 ` Segher Boessenkool
2022-06-21 22:22 ` Nathan Lynch
2022-06-21 22:22 ` Nathan Lynch
2022-06-02 17:53 ` [PATCH v2 2/4] powerpc/pseries: add FW_FEATURE_WATCHDOG flag Scott Cheloha
2022-06-02 17:53 ` Scott Cheloha
2022-06-21 15:03 ` Nathan Lynch
2022-06-21 15:03 ` Nathan Lynch
2022-06-02 17:53 ` [PATCH v2 3/4] powerpc/pseries: register pseries-wdt device with platform bus Scott Cheloha
2022-06-02 17:53 ` Scott Cheloha
2022-06-21 15:30 ` Nathan Lynch
2022-06-24 13:27 ` Michael Ellerman
2022-07-07 15:53 ` Scott Cheloha
2022-07-07 15:53 ` Scott Cheloha
2022-06-02 17:53 ` [PATCH v2 4/4] watchdog/pseries-wdt: initial support for H_WATCHDOG-based watchdog timers Scott Cheloha
2022-06-02 17:53 ` Scott Cheloha
2022-06-20 6:09 ` Alexey Kardashevskiy
2022-06-20 6:09 ` Alexey Kardashevskiy
2022-06-21 15:45 ` Nathan Lynch [this message]
2022-06-21 15:45 ` Nathan Lynch
2022-06-24 13:27 ` Michael Ellerman
2022-06-24 15:31 ` Segher Boessenkool
2022-06-24 15:31 ` Segher Boessenkool
2022-07-08 5:51 ` Scott Cheloha
2022-07-08 5:51 ` Scott Cheloha
2022-06-24 13:51 ` Michael Ellerman
2022-07-07 15:53 ` Scott Cheloha
2022-07-07 15:53 ` Scott Cheloha
2022-06-16 1:43 ` [PATCH v2 0/4] pseries-wdt: " Daniel Henrique Barboza
2022-06-16 16:44 ` Tyrel Datwyler
2022-06-16 18:16 ` Daniel Henrique Barboza
2022-06-16 18:33 ` Daniel Henrique Barboza
2022-06-17 12:54 ` Daniel Henrique Barboza
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